'Rock-paper-scissors' preserves biodiversity in bacterial neighborhoods
... think about how populations interact in space and relax this assumption. We can assume now that organisms actually have a relationship with place, and they interact more with their neighbors than they do with organisms farther away. And that's a big revolution in ecology." Bohannan and colleagues are now ...Walking aids older women's arterial elasticity, helping heart
...lasticity, making it harder for them to expand and relax with each heart beat. Increase in the stiffness of these arteries can contribute to high blood pressure and enlarging of the heart, both risk factors for heart disease. Impaired elasticity in the carotid artery also can be a factor in postural hypo......use the extracts did not significantly contract or relax arteries in which the endothelium was removed. Relaxation of coronary arteries to an agent that releases NO from the arterial endothelium, as well as that in response to NO itself, were not altered by either the presence, short term exposure or ove...The building blocks of erection: Nitric oxide...and more nitric oxide
...s. Endothelial nitric oxide causes more tissue to relax and the process repeats until the penis is fully erect. A key element in the attainment of erection is the continuous activation of the source of nitric oxide in blood vessel walls, according to Burnett. Finding this source, a special form of the en...Early detection device for exposure to chemical warfare agents being developed
...y sophisticated system that allows you to fire and relax in millisecond amounts of time." The Germans actually developed chemical warfare agents by looking at the different inhibitors of cholinesterase. For example, eye drops used to relieve the dangerously high intraocular pressure of glaucoma use carbama......al muscle fibers in the arms and legs contract and relax rapidly and efficiently. Olympic sprinters have h... works like a sponge helping skeletal muscle cells relax faster by soaking up calcium ions. In a study published in the Jan. 15 issue of the Journal of Clini...2000 FALL MEETING: updated press conferences, press registration, and other information
...rday, December 16, at 5:30 PM. This opportunity to relax and chat with old friends and new will be followed at 6:30 PM by a special program in the Briefing Room, featuring two new science books for the general public: Laurence Bergreen, a science writer from New York and member of NASW, will introduce "V...Report says hot steam dramatically increases ginseng's potency
...xidant qualities by eight times and its ability to relax blood vessels by up to 32 times, according to researcher Jeong Hill Park of Seoul National University in Korea. The hotter steam produced an optimal amount of biological activity from the same ginseng used in normal supplements, Park found. The high...Two NHLBI studies confirm finding of gene in primary pulmonary hypertension
...venous administration of prostacyclin to dilate or relax blood vessels. These treatments are expensive and difficult, and side effects are common. Before the availability of these treatments, survival following diagnosis of PPH was only 3 to 5 years. Even with treatment, life expectancy for PPH patients...The power of the mother-child bond
...increase milk production, facilitate milk release, relax the mother, increase the infant's milk intake, and/or help the baby sleep. Yet apart from possibly helping the mother relax, said Mennella, "there's no scientific evidence that supports the folklore, in fact, it's the opposite." "Some doctors toda...Gene transfer improves function of aging hearts in animals
...c dysfunction, an inability of the heart muscle to relax normally. Previous research in animals and in human heart muscle cells has shown that increasing SERCA2a could improve the function in actual heart failure, but this study is the first to show that altering gene expression could improve the more com...Gene mutation alters feeding behavior
...it can't really pump any blood before it starts to relax again." Because the scientists were able to describe the biophysical, electrophysiological and behavioral effects of this mutation, they now know every step in the causal chain linking a mutation to altered feeding behavior in c. elegans. The r...Smoking especially dangerous for individuals with gene that causes coronary artery spasm
... levels of the chemical stimulate blood vessels to relax or constrict to meet the heart's increasing or decreasing demand for blood flow. "Given that the effects of the gene and smoking are potentially additive, individuals with the gene should be strongly cautioned against smoking," says Michihiro Yoshimu...Mayo Clinic study shows dietary supplement may help fight heart disease
...cts on the lining of blood vessels (endothelium)to relax the vessel wall and may inhibit the build-up of platelets and plaques. "These findings are exciting," Dr. Lerman says, "but we want to cautionpatients to discuss the use of L-arginine -- as the use of any supplement --with their physicians."...'Altered state' may be responsible for creating important brain chemicals
...hen the RNA polymerase stops moving, other enzymes relax the DNA and itreverts to its normal right-handed form. Like a stretched phone cord that isreleased, it snaps back into its usual shape. Rich's work is also funded by the National Institutes of Health.......cytes, had recovered their ability to contract and relax as a result of the heart's being supplemented by the LVAD. The heart cells had been obtained from patients who had been on LVADs but who were given heart transplants. In the second study, scientists describe how they had weaned five patients from t......icantly improved "vasodilation," or the ability to relax and avoiddangerous constriction. Similar findings ...uced compound inthe body, nitric oxide, that helps relax blood vessels, inhibits theaggregation of platelets and the formation of blood clots, and decreases ...